/*
 * Copyright (C) 2016 The Android Open Source Project
 *  Created by  Ant  2016/10/5  12:46
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.ant.ut.utils;

import android.content.Context;
import android.util.DisplayMetrics;
import android.view.WindowManager;

/**
 * Created by baichuan on 2016/10/5.
 */
public class ScreenUtils {

    private static WindowManager windowManager;
    private static DisplayMetrics metrics;

    /**
     *获取窗口管理器
     * @param context
     * @return
     */
    public static WindowManager getWindowManager(Context context) {
        if (windowManager == null)
            windowManager = (WindowManager) context.
                    getSystemService(Context.WINDOW_SERVICE);
        return windowManager;
    }

    /**
     *获取手机屏幕的大小
     * @param context
     * @return
     */
    public static DisplayMetrics getScrennSize(Context context) {
        if (metrics == null) {
            metrics = new DisplayMetrics();
            getWindowManager(context).getDefaultDisplay().getMetrics(metrics);
        }
        return metrics;
    }

    /**
     * 获得手机的dencity
     * @param context
     * @return
     */
    public static float getDencity(Context context) {
        return getScrennSize(context).density;
    }





}
